[PATCH 7/7] dmaengine: at_xdmac: Add DMA_PRIVATE
From: Ludovic Desroches <hidden>
Date: 2014-11-13 10:52:45
Also in:
linux-arm-kernel
Subsystem:
dma generic offload engine subsystem, microchip at91 dma drivers, the rest · Maintainers:
Vinod Koul, Ludovic Desroches, Linus Torvalds
same issue as commit 7f5ae3553685: "Without DMA_PRIVATE the driver is not able to allocate more than one channel. Since it uses dma_get_any_slave_channel that calls private_candidate, the second allocation fails at /* some channels are already publicly allocated */ " Signed-off-by: Ludovic Desroches <redacted> --- drivers/dma/at_xdmac.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c
index 586275f..b60d77a 100644
--- a/drivers/dma/at_xdmac.c
+++ b/drivers/dma/at_xdmac.c@@ -1394,6 +1394,11 @@ static int at_xdmac_probe(struct platform_device *pdev) dma_cap_set(DMA_CYCLIC, atxdmac->dma.cap_mask); dma_cap_set(DMA_MEMCPY, atxdmac->dma.cap_mask); dma_cap_set(DMA_SLAVE, atxdmac->dma.cap_mask); + /* + * Without DMA_PRIVATE the driver is not able to allocate more than + * one channel, second allocation fails in private_candidate. + */ + dma_cap_set(DMA_PRIVATE, atxdmac->dma.cap_mask); atxdmac->dma.dev = &pdev->dev; atxdmac->dma.device_alloc_chan_resources = at_xdmac_alloc_chan_resources; atxdmac->dma.device_free_chan_resources = at_xdmac_free_chan_resources;
--
2.0.3
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